Question: Solve the equation. Check your solutions? 1. 5x4 12x3 = 0 2. 4x3 6x2 = 0 3. x3 7x2 + 4x

Solve the equation. Check your solutions?
1. 5x4 − 12x3 = 0
2. 4x3 − 6x2 = 0
3. x3 − 7x2 + 4x − 28 = 0
4. 9x4 + 27x3 − 4x2 − 12x = 0

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